Paul Casey will look to bounce back from the disappointment of last week's British Open at the PGA Tour’s RBC Canadian Open near Toronto, which gets under way on Thursday.

Casey went into the final round at St. Andrews four shots behind leader Louis Oosthuizen but in a confident mood after three rounds in the 60s over the Old Course. But the Ryder Cup star could only card a closing 75 to finish in a tie for third with Henrik Stenson and Rory McIlroy, eight shots behind runaway winner Oosthuizen.

However, the world No. 10 is looking on the bright side after returning to full fitness following a serious rib injury suffered last year.

"It's been a year ago that I injured myself and it's sort of full circle now," Casey said. "The beginning half of the season, although I've had some good results, I must admit I've been playing a little bit tentatively, just trying to get back into the rhythm, into competitive golf.

"I've done okay and maybe this (performance at St. Andrews) is a sign that the latter half of the season is going to be great for me. That would be nice,” he added. "I'm obviously disappointed with my finish, but there are positives. I'm trying to take the positives out of this because six months ago, I had no idea if I was going to get back to this sort of form again. And I know I'm going to win a major, it's just a matter of time."

The only remaining major this year is the PGA Championship at Whistling Straits in mid-August.

"I didn't play well the last time we were there in 2004 (missing the cut), so I want to get stuck in,” Casey said. "And we have plenty of big stuff left. A couple of WGCs (World Golf Championship events), a major, FedExCup, Dubai (World Championship).

"I missed out on all of that stuff last year, so I intend to carry on this form and actually play a little bit better and try and leave a mark the rest of the year."